Introducing the daring and dangerous private intelligence agency, K19 Security Solutions. In this four-book boxed set, these men will battle external enemies and internal passions to protect each other—and the women they love.

After putting her life on the line to protect classified intelligence, military psychologist Mia Kensington is on a cross-country road trip from hell with an intrusive save-the-day hero. Uninterested in his white knight act, she'd rather take her chances without the ruggedly handsome, cold-blooded operative who boasts an alpha complex and too many guns. Colby Winters, an elite member of The Titan Group, has a single objective on his black ops mission: recover a document important to national security.

After a near-fatal head injury, Navy SEAL lieutenant Tom Paoletti catches a glimpse of an international terrorist in his New England hometown. When he calls for help, the Navy dismisses the sighting as injury-induced imaginings. In a last-ditch effort to prevent disaster, Tom creates his own makeshift counterterrorism team, assembling his most loyal officers, two elderly war veterans, a couple of misfit teenagers, and Dr. Kelly Ashton.

Start out the New York Times best-selling Delta Force Heroes series with the first four audiobooks all in one giant collection! 

Precious lives were saved when three brave Navy SEALs went against orders, embarking on a rescue mission of their own. A mission that will never be forgotten and changed the course of their lives forever. While they will never regret their decision, it came with heavy consequence. Now they must fight to protect the women they love while also battling the new and existing demons that torture their souls, from death, corruption, destruction, and war. These men are strong, honorable, and will do everything they can to overcome the past that continues to haunt them.